body {
  font-family: Arial, sans-serif;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100vh;
  margin: 0;
  background-color: #f0f0f0;
}

h1 {
  color: #333;
}

.container {
  position: relative;
  width: 720px;
  height: 560px;
  border: 2px solid #333;
}

video {
  position: absolute;
  top: 0;
  left: 0;
}

canvas {
  position: absolute;
  top: 0;
  left: 0;
}
